title: [Purine nucleoside phosphorylase activity in T-enriched preparations of human peripheral lymphocytes].
abstract: Purine nucleoside phosphorylase (PNP) activity was measured in peripheral blood mononuclear cells and in T-enriched populations from 6 normal subjects. PNP activity in T-enriched populations were in average 50% of that in unseparated mononuclear cells. In our cell preparations, T-cells appeared to contribute to 27-49% of total biochemical PNP levels in peripheral blood mononuclear cells. T-lymphocytes obtained by rosetting with sheep red blood cells could be a suitable cell population for determining PNP activity in patients with immune disfunction.
mesh_terms: D006801:Humans; D009000:Monocytes / Q000201:enzymology*; D010430:Pentosyltransferases / Q000097:blood*; D011683:Purine-Nucleoside Phosphorylase / Q000097:blood*; D012397:Rosette Formation; D013601:T-Lymphocytes / Q000201:enzymology*
chemical_list: D010430:Pentosyltransferases; D011683:Purine-Nucleoside Phosphorylase
vernacular_title: Attività purina nucleoside fosforilasi in preparazioni T-arricchite di linfociti umani periferici.